Extron electronic DVI DA2, DVI DA4 user manual Installation and Operation, cont’d Troubleshooting

Installation and Operation, cont’d

Troubleshooting

No output signal — Check that the front panel LED is on (lit green). If it is not, check the power supply connections to the unit (see page 2-10).

No output signal or poor quality signal — Check the integrity of the cabling to output 1 and ensure that output 1 (Local Output) is connected to the distribution amplifier before powering on the source device

If the source device cannot communicate with output 1 when it is being powered on, it may not be able to send a video signal or the signal may have the wrong resolution or refresh rate.

No output signal or poor quality signal — Check the input and output cabling (see page 2-8). DVI signals run at very high frequency and poor connections can cause degradation or loss of the signal, or jitter. To avoid this:

•Use only cable that is designed for DVI signals.

•Limit or avoid the use of adapters.

Display device displays a flashing black or blue screen, snow or other distortion — A device that is not HDCP compliant may be receiving HDCP-encrypted signals.

The DVI DA2 and DVI DA4 are not High-Bandwidth Digital Content Protection (HDCP) compliant. They will only pass HDCP-encrypted signals to the local output device.

Signal on local monitor but not on other displays — Check that all output devices (monitors or projectors) can handle resolutions equal to or greater than that of the local monitor.

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